CS5317

Features:

·Complete Voiceband DSP Front-End
   - 16-Bit A/D Converter
   - Internal Track & Hold Amplifier
   - On-Chip Voltage Reference
   - Linear-Phase Digital Filter
·On-Chip PLL for Simplified Output Phase Locking in Modem Applications
·84 dB Dynamic Range
·80 dB Total Harmonic Distortion
·Output Word Rates up to 20 kHz
·DSP-Compatible Serial Interface
·Low Power Dissipation: 220 mW


Pinout




Specifications

Parameter	Symbol	Min	Max	UnitS
DC Power Supplies:                 Positive Digital                                                 Negative Digital                                                 Positive Analog                                                 Negative Analog	VD+ VD- VA+ VA-	-0.3 0.3 -0.3 0.3	(VA+) + 0.3 -6.0 6.0 -6.0	V V V V
Input Current, Any Pin Except Supplies        (Note 13)	Iin	-	±10	mA
Analog Input Voltage (AIN and VREF pins)	VINA	(VA-) - 0.3	(VA+) + 0.3	V
Digital Input Voltage	VIND	-0.3	(VD+) + 0.3	V
Ambient Operating Temperaturet	TA	-55	125
Storage temperature	Tstg	-65	150

Notes: 13. Transient currents up to 100mA will not cause SCR latch-up.

WARNING:Operating this device at or beyond these extremes may result in permanent damage to the device.
                 Normal operation of the part is not guaranteed at these extremes.


Description

The CS5317 is an ideal analog front-end for voiceband signal processing applications such as high-performance modems, passive sonar, and voice recognition systems. It includes a 16-bit A/D converter with an internal track & hold amplifier, a voltage reference, and a linear-phase digital filter.

An on-chip phase-lock loop (PLL) circuit simplifies the CS5317's use in applications where the output word rate must be locked to an external sampling signal.

The CS5317 uses delta-sigma modulation to achieve 16-bit output word rates up to 20 kHz. The delta-sigma technique utilizes oversampling followed by a digital filtering and decimation process. The combination of oversampling and digital filtering greatly eases antialias requirements. Thus, the CS5317 offers 84 dB dynamic range and 80 dB THD and signal bandwidths up to 10 kHz at a fraction of the cost of hybrid and discrete solutions.

The CS5317's advanced CMOS construction provides low power consumption of 220 mW and the inherent reliability of monolithic devices.